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Finding the Fourth Proportional to 121,357.68, 182,095.20 and 49,308.72

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Solution

The fourth proportional to 121,357.68, 182,095.20 and 49,308.72 is: 73,986.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,357.68 : 182,095.20 = 49,308.72 : x
  2. Step 2: Convert to fraction form
    121,357.68/182,095.20 = 49,308.72/x
  3. Step 3: Cross multiply
    121,357.68x = 182,095.20 × 49,308.72
  4. Step 4: Simplify right side
    121,357.68x = 8,978,881,230.14
  5. Step 5: Solve for x
    x = 8,978,881,230.14/121,357.68
  6. Step 6: Final answer
    x = 73,986.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.